fix(92c2-b442): support indented FAIL lines in red-zone.sh parser

parse_failing_tests_from_output used ^FAIL: anchor which required FAIL:
at line start. Most test scripts output "  FAIL: test_name" with 2-space
indent (203 instances across 20 files), making them invisible to the
parser. When no test names are parsed, the fail-safe treats ALL failures
as blocking, defeating RED zone tolerance. Removed the ^ anchor so both
indented and non-indented FAIL: lines are matched.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JoeOakhartNava

plugins/dso/hooks/lib/red-zone.sh

@@ -82,7 +82,8 @@ parse_failing_tests_from_output() {
         || true
 
     # Bash-style (assert_pass_if_clean): "FAIL: test_name" on stderr merged into output
-    grep -oE '^FAIL: [a-zA-Z_][a-zA-Z0-9_-]*' "$output_file" \
+    # No ^ anchor — many test scripts output indented "  FAIL: test_name" lines
+    grep -oE 'FAIL: [a-zA-Z_][a-zA-Z0-9_-]*' "$output_file" \
         | sed 's/^FAIL: //' \
         || true
 

tests/hooks/test-red-zone.sh

@@ -141,6 +141,16 @@ rm -f "$_out3"
 _failing4=$(parse_failing_tests_from_output "/tmp/nonexistent-red-zone-XXXXXX-abc")
 assert_eq "missing output file returns empty" "" "$_failing4"
 
+# Test: indented "FAIL: test_name" lines (2-space indent) are parsed correctly
+_out5=$(make_temp_file)
+cat > "$_out5" <<'EOF'
+  FAIL: test_indented_one
+  FAIL: test_indented_two
+EOF
+_failing5=$(parse_failing_tests_from_output "$_out5" | sort | tr '\n' ',' | sed 's/,$//')
+assert_eq "indented FAIL: prefix format parsed" "test_indented_one,test_indented_two" "$_failing5"
+rm -f "$_out5"
+
 # ============================================================
 # get_test_line_number tests
 # ============================================================